| City : | Jefferson City |
| County : | Honolulu County, Union County |
| State : | South Dakota (SD) |
| | |
| Land Area : | 0.50 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 42.6042928 |
| Longitude : | -96.5659913 |
| | |
| Population (2010): | 547 |
| Population Estimate (2012) : | 624 |
| Population Density : | 1,086.63/sq mi |
| Housing Units (2012) : | 248 |
| Median Household Income (2012) : | $58,571 (South Dakota : $49,091, USA : $53,046) |
| Median Family Income (2012) : | $68,750 (South Dakota : $62,967, USA : $64,585) |
| Median House Price (2012) : | $110,100 (South Dakota : $129,800, USA : $181,400) |